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VM_STAT(1) BSD General Commands Manual VM_STAT(1)
vm_stat -- show Mach virtual memory statistics
vm_stat displays Mach virtual memory statistics. If the optional interval is specified,
then vm_stat will display the statistics every interval seconds. In this case, each line of
output displays the change in each statistic (an interval count of 1 displays the values per
second). However, the first line of output following each banner displays the system-wide
totals for each statistic. The following values are displayed:
the total number of free pages in the system.
the total number of pages currently in use and pageable.
the total number of pages on the inactive list.
Pages wired down
the total number of pages wired down. That is, pages that cannot be paged out.
the number of times the "vm_fault" routine has been called.
the number of faults that caused a page to be copied (generally caused by copy-on-
Pages zero filled
the total number of pages that have been zero-filled on demand.
the total number of pages that have been moved from the inactive list to the active
the number of requests for pages from a pager (such as the inode pager).
the number of pages that have been paged out.
If interval is not specified, then vm_stat displays all accumulated statistics along with
the page size and the object cache performance.
Mac OS August 13, 1997 Mac OS
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